const fs = require('fs');
const promisify = require('util').promisify;
const readFile  = promisify(fs.readFile);

async function read(){
   let r1 =  await readFile('./1.txt','utf8');
   let r2 =  await readFile('./2.txt','utf8');
   let r3 = await readFile('./3.txt','utf8');


   console.log(r1);
   console.log(r2);
   console.log(r3);
}

read();